Two things come to mind. First, I put a similar set of hubs on the car I
sold to Ron Watson. I had the same issue, tried turning down the OD of the
hub but didn't gain enough clearance, re-drilled the holes in the shoes and
ran both upper and lower springs with no problem.
Second, this speaks volumes for the idea of running a dual braking
system. The later master cylinder can be fitted by using the later pedal
box, which does require some cutting. I put a Datsun dual master in my
car, which in my opinion worked extremely well but required more
fabrication than the stock MC and still required the use of the later pedal
box. I can visualize fabricating a system that used a single clutch MC, and
a linkage to allow proper dual MC's with balance bar mounted in a stock
pedal box, but haven't actually made one so I don't know if it could be done.
Brian
At 06:23 AM 02/15/2000 -0500, Rick Cook wrote:
>Try drilling holes in a different location on the back of the shoes to hold
>the springs. I run one spring as a normal setup.. who needs brakes on a
>sprite, anyway?
>RC
>
>-----Original Message-----
>From: owner-team-thicko@autox.team.net
>[mailto:owner-team-thicko@autox.team.net]On Behalf Of Mike & Kerry
>Gigante
>Sent: Tuesday, February 15, 2000 12:32 AM
>To: Spridgets
>Cc: Thickos
>Subject: Double Bearing hubs for Spridgets - anyone using them?
>
>
>I recently fitted a set of DB hubs I bought from Mini Mania back in
>'96 (I know - I'm so slack).
>
>I fitted them to my new racecar just before Bathurst last year. At the 2nd
>meeting
>with these hubs on, I had a total brake failure at about 120 mph at the 1st
>turn at
>Sandown - *very* hairy ride which ended up about a yard and a half from an
>armco barrier that it self is about 100 yds from the track.
>
>Well I now know what happened. The shoe return springs were ground down by
>the hubs causing the shue to wear out very assymetrically and rapidly. The
>piston
>them popped out of the wheel cylinder and presto - no brakes (early master
>cylinder).
>
>I have played around with the hubs and springs and tried all the
>combinations that
>seemed likely but cannot avoid a slight rubbing b/n the hubs and the
>springs. As I
>am heading off for a closed road special stage rally this weekend, (one with
>lots of
>trees and cliffs close to the roads), I have removed the hubs and gone back
>to originals
>until I find a solution.
>
>Maybe I'm missing something, but these things seem dangerous to me. If there
>is a
>way around it, I'd appreciate hearing from you. If you reckon I'm mistaken
>for some
>reason, tell me why and I'll respond with an affirmative or a negaative!
>
>Yes, I am sure that is what happened - a quick glance at the other side
>showed that it
>was destined to fail not far down the line.
>
>If you do have the hubs, maybe youshould check those springs and let us know
>whether the same is happening to yours.
>
>Yes, I am aware that the top springs are handed.
>
>Mike
>
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